Phoenix cases have been increasing in the last week. But today we hit 85 degrees and will be warm and dry for the rest of the week. It will be very interesting to see if the numbers level off or drop next week in Arizona. Like most warm places around the world the overall numbers here is still relatively low.
I don't think it's the
heat per se, but the
sunlight. Viruses/flus/colds decrease in the summer because there's more sunlight and we're exposed to it more. The ultraviolet light from the sun
inactivates viruses. This is literally how they do it in the lab when they isolate a virus to study it --- bathe it in UV light. Puts the virus right to sleep.
Here's a fairly technical article about it.
So everybody who's not working 'essential', yes stay at home but don't stay indoors. Get some sunshine, it's good for what might ail ya.